Wireless handheld controller



FIG. 1 is an isometric view of the wireless handheld controller;

FIG. 2 is a left elevation view thereof;

FIG. 3 is a right elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a back view thereof. 

The ornamental design for a wireless handheld controller, substantially as shown and described. 